This series and parallel sensor circuit was found in Popular Electronics from the 1990s. Any SCR can be used and the supply voltage depends on the load.
PIC18F “K40” Features Intelligent ADC with Filtering and Signal Analysis Capabilities Ideal for...
According to what is said, the bugs are the female insects (mosquitoes, muriçocas and others)....
This is the typical configuration for a high voltage triplicator. The configuration can be used...